Lock.



L KOHN.

LOCK.

APPLICATION FILED- DEC. 1x. 19|?.

Patented May 6, 1919.

w if

BY 0k W J. KUHN.

LOCK.

APLlcAloN FILED mic. l1. |911.

Jl 302,565 Patented vMay 6, 1919.

2 SHEETS-SHEET 2.A

A TTH/VEYS me mmm: persas ca., puaruinnu wmf-mun, n. z:4

UFD PATENT @111mm JACOB KOHN, or new YORK, 1v. Y.

LOCK.

Lacasse.

Application led December 11, 1917.

To all whom t 'may concern:

Be it known that l, JACOB KOHN, a citizen of the United States, and a resident of the borough of Manhattan, city and State ot New York, have invented certain new and useful Improvements in Locks, of which the following is a specification.

My invention relates to locks for doors and the like and more particularly to that type of locks in which the bolt, insteadol' having sliding movements in linear directions, is movable to and from an operative position in the arc of a circle. The object of my invention is to provide a simple construction having a minimum number of parts and which operates with a maximum ot' etliciency to securely hold doors and the like against forcing or other unintentional opening. Other objects of my invention will appear in the description hereinafter and the features of novelty will be pointed out in the appended claims.

In the accompanying drawings which, for illustrative and descriptive purposes show an example of my invention, Figure 1 is an elevation showing my improved lock operatively combined with an inwardly swinging door; Fig. 2 is a sectional view on the line 2 2 ot Fig. 1; Fig. 3 is a view similar to Fig. 1 with a portion oft the lock casing removed to expose `the interior; Fig. 1 is a view similar to Fig. 3 but illustrating the parts in different positions; Fig. 5 is a plan view ot' Fig. a with the door and door casing shown in section; Fig. 6 is an elevation oit the front section of the lock casing; Fig. 7 is a plan view partly in section illustrating my improved lock operatively combined with an outwardly swinging door and Fig. S is a detail perspective view of a locking element forming part of my improved lock. j

As shown in .the illustrated example, my improved lock comprises a hollow, metallic or other casing 1() which may consist of a back plate 11 and a front section 12. The back plate 11 and the front section 12 may be provided respectively with a stud 13 and a boss 14 arranged in axial alinement, the boss 14 preferably being Ot somewhat larger external diameter than the stud 13, as shown Specication of Letters Patent.

Patented May 6, 1212.

Serial No. 206,678.

in Fig. 2. A screw 15 passes through an axial passage formed in the boss 14 into screwthreaded engagement with a screw-threaded aperture formed in the stud 13 and serves to detachably connect the back plate 11 and front section 12 together. The back plate 11 is provided with suitable openings for the accommodation of screws or the like 16, whereby the lock is attached in operative position upon the door or the like 17. Some of said screws may also pass through suitable openings in the casing section 12, thus providing an additional means whereby the back plate 11 and section 12 are combined. A bolt 18 is pivotally vmounted upon the stud 13 in engagement with the annular shoulder formed by the end tace of the boss 14C which thus forms a bearing therefor, said bolt extending exteriorly beyond the casing 10 through a suitable opening 10a therein, as shown in the drawings. It the lock is intended for use with a door opening inwardly in the direction indicated by the arrow in Fig. 5, the bolt 18 coperates with a keeper 19 suitably secured to the door casing 20 by means ot screws or the like 21 and including an upwardly open recess 22 for the accominodation of said bolt 18, as shown in Figs. 1, 3 and 5. In this case the free end of the bolt 18, when in its locking position, preterably extends horizontally through the rccess 22 and is provided with a transverse projection 23 which coperates with the keeper to prevent any material separation ot the door and its casing at the opposed edges cz and b. It, on the other hand, the lock is intended to be operatively combined with a door opening outwardlv the transverse projection, at the free end ot the bolt 18 is increased in length as indicated at 23a to fit into the recess 22a of the keeper 19a. In other words, the latter, which may be of the same general construction as the keeper 19, is positioned on the door casing 202L with its recess 22a extending in a direction at right angles to that of the recess 22 in Fig. 5. The transverse projection 23a is further formed with a hook or member 23b which extends substantially parallel with the bolt 18 and cooperates with said keeper 19 to prevent the door 17a trom swinging outwardly upon its hinges. The transverse projection 23EL also serves to prevent any material separation of the door and casing at the opposed edges a and Z). It will, of course, be obvious that the bolt 18 shown in Figs. 1 to 5 may also be effectively used in combination with an outwardly opening door and similarly that the bolt shown in Fig. 7 may be efficiently combined with a door opening inwardly if this should be desired. Both forms of bolts are further adapted for use in locking sliding doors against unintentional opening, as will be readily apparent.

Whether constructed to lock an inwardly or an outwardly opening door, or a sliding door, the bolt 18 in either case is formed at its inner end portion with a depending extension 24 in which an outwardly open slot 25 is formed, said slot being preferably inclined with respect to the bolt 18, as shown in Figs. 1, 3 and 4. The lock further includes a lever 26 carried by a sleeve 26a rotatably mounted in the back plate 11 of the casing 10, said lever preferably being located in surface engagement with said back plate 11, as shown in Fig. 3, and arranged for connection with the customary key-operated mechanism whereby the lock is usually manipulated from the outside. For instance, said lever 26 and sleeve 26"L may be provided with an axial opening` 27 of angular form and adapted to receive the end of a similarly formed connecting rod 28 whereby the tumbler barrel 29 of the key-operated mechanism is operatively connected with the lock. The barrel 29 may form an integral part of a key plate 30 located upon the outside surface of the door, which in this case is formed with a suitable aperture 31 for the accommodation of said tumbler barrel 29 in the well known way. Any suitable means may be employed for securing the tumbler barrel 29 and key plate 30 upon the door, as, for instance, screws 32 suitably connected with the lock and extending into screw-threaded engagement with lugs 33 formed, for instance, on the barrel 29. It will, of course, be understood that the lever 26 may be oper atively connected with any other kind or type of key operated or other mechanism whereby the lock may be manipulated from the outside.

The lever 26 is provided with a transverse pin 34 adapted to enter the slot 25 and engage the depending extension 24 to swing the bolt 18 in a manner to be more fully described hereinafter, and is further formed at its free end with a preferably rounded nose 35, the purpose of which will also appear more fully further on in the descrip tion.

The lock may be actuated from the inside in any suitable manner as, for instance, by

means of a knob 36 journaled in the front section 12 of the casing 10 and having a reduced end 37 which extends through the same as shown in Fig. 2. The end 37 of the knob 36 carries a double lever 38 preferably located in surface engagement with the inner surface of the casing section 12 and provided at its opposite ends with pins 39, each of which is arranged to also enter the slot 25 for engagement with the extension 24 to actuate the bolt. The opposite ends of said double lever 38 are also formed wit-h preferably rounded noses 40 similar to the nose 35 of the lever 26. A leaf spring 41 is secured in the casing 10 and is provided with a notch 42 for the reception of the pins 39 whereby the lever 38, in addition to being under the influence of said spring, is stopped in the position shown by dotted lines in Fig. 6.

A locking member 43 is pivoted at 44 upon the back plate 11 and extends between the latter and the bolt 18 as shown in Fig. 2, said member being formed with a transverse shoulder 45 adapted to coperate with notches or the like 46 and 47 formed in a preferably curved edge 48 of the bolt 18 to lock the latter respectively in its operative and its inoperative positions. The member 43 is further provided with integral cams 49 and 50 located in spaced and preferably parallel relation to each other as illustrated in Fig. 8, said cams being arranged for coperation respectively with the noses 35 and 40 of the levers 26 and 38 to release the bolt 18 from the shoulder 45, as will be more fully set forth hereinafter. The lock ing member 43 is under the influence of a spring 51 which exerts a tension tending to maintain the shoulder 45 in one or the other of the notches 46 and 47. A projecting finger 52 is also carried by the member 43 and has its free end arranged to enter a notch 53 formed on the lever 26 whereby the rotative movement of the latter in one direction is arrested, when the bolt 18 is in its operative position; it will, of course, be understood that the notch 53 may be omitted without materially interfering with the eiiciency of the finger 52 as a stop. A similar finger 54 is located upon the inner end of the bolt 18 in proper position for engagement with a lug 55 on the lever 26 whereby the rota* tive movement of the latter, in the oppo site direction is arrested, when the bolt 18 is in its inoperative position. A disarrange` ment of the parts is thus positively prevented with the construction described. If desired, a stud or pin 56`may project from the bolt 18 into engagement with the inner surface of the section 12 of the casing 10 for steadying the bolt 18 in its movements against undesirable vibration.

In practice when the locking mechanism is p in its operative position and the bolt 18 is located in the recess 22 or 222L of the keeper 19 or 19a as shown in Figs. 1, 3 and 7, the door 17 or 17a is firmly and securely locked against any movement on its hinges, or in the case of a sliding door, is firmly held against any sliding movement; at the same time, because of the coperation of the transverse projections 23 and 23a with the respective keepers 19 and 19a, it is absolutely impossible to bring about any material separation of the door edge a and edge Z) of the casing 20 or 20a. Itis thus substantially impossible, for inst-ance, to successfully jimmy the door or to break the operative connection between the bolt 18 and its keeper 19 or 19a, as is clearly apparent in the drawings. It will be seen that the bolt 18 is securely locked against any swinging movement through the coperation of the shoulder 45 of the locking lever 43 and the notch 46, so that it is impossibile to disconnect the bolt from its keeper by means of any instrument inserted between the door and its casing.

lf the door, of whatever type it may be, is to be legitimately opened from the outside, lthe proper key 57 is inserted into the key hole of the key plate 30 and rotated in the usual way to bring about a rot-ation of the connecting rod 28 and consequently a similar movement of the sleeve 26a. As the latter is thus rotated, the lever 26 will be moved in the arc of a circle in the direction indicated by the arrows in Fig. 3 thus causing the pin 34 to enter the slot 25 of the bolt 18 and finally to bear against a wall of said slot or in other words against the extension 24. The described `actuation of the lever 26 also causes the nose 35 thereof to engage the cam 49 of the locking lever 43 whereby the latter is swung against the tension 'of the spring 51 to move the shoulder 45 out of the notch 46; the locking lever 43 is thus rendered ineffective as a means for preventing a swinging movement of the bolt 18 toward its inoperative position., The engagement of the nose 35 with the cam 49 takes place before the pin 34 comes into contact with the extension 24 so that the bolt 18 is released in time to permit its intended actuation by the lever 26 through the medium of the key actuated mechanism. As the operation of the latter is `continued to complet-ion, the rotation of the lever 26 will be also continued whereby the pin 34 is caused to exert a pressure against the extension 24 and thus swing the bolt 18 upwardly in the opening 10a and out of the recess 22 or 22d of the keeper 19 or 19a to the position shown in Fig. 4. During the described movement of said bolt 18 the shoulder 45y will ride along the curved surface 48 of the extension 24 and, under the iniiuence of the spring 51, will finally snap into the notch 47 whereby the bolt18 is seto the double lever 38 and causes one of the pins 39 thereof to enter the slot 25 and to finally engage the extension 24. Prior to such engagement the coperating nose 40 of said lever 38 will contact with the cam 50 and thus swing the lever 43 against the tension of the springl 51, whereby the shoulder 45 is moved out of the notch 46 and the bolt 18 released in the same manner as previously described. A continued actuation of the knob 36 and lever 38 will swing the bolt 18 to the inoperative position shown in Fig. 4 in which, as before stated, it is locked by means of said shoulder 45 and notch 47. It will be noted that the key actuated mechanism and the knob actuated mechanism operate independently of each other, as is clearly shown in Fig. 2.

After the door has been again closed, the bo'lt' 18 may be returned to its operative or locking position by `again actuating either the key actuated mechanism from the outside or the knob 36 from the inside, as the case may be. These operations will cause either the nose 35 of the lever 26 to engage the cam 49 or one of the noses 40 of the lever 38 to contact with the cam 50, the operation in either case serving tofmove the shoulder 45 out of the notch 47. The bolt 18 being in this manner released from the locking influence of the locking lever 43, as shown in Fig. 4, will drop by gravity into the notch 22 or'22a of the coperating keeper 19 or 1f)n to again securely lock the door in its closed position. The return of the bolt 18 to its operative position may be controlled by means of the key 57 or knob 36, or in other words, by causing the pins 34 or 39 of the levers 26 and 38 respectively to exert a restraining action upon the extension 24, as will be apparent.

It will be noted, when the bolt 18 is in its operative position, that the projecting finger 52 carried by the locking lever 43 by entering the notch 53 or, in the absence of said notch, by abutting against the lever 26, arrests the rotative movement of the latter in one direction, as shown in Fig. 3; similarly the finger 54 carried by the bolt 18 by engagement with the lug 55, arrests the rotative movement of said lever 26 in the opposite direction when said bolt 18 is in its inoperative position, as shown in Fig. 4.

without in any way detracting from the cih-' ciency of my improved lock. The latter is extremely eiiicient `in action and is proof against any tampering whereby illegitimate entrance through the door 17 or 17a may be etfected. The construction comprises a minimum of parts of simple form which may be easily and economically produced, so that my improved lock, while it possesses a very high degree of efficiency, is low in cost and not likely to become disarranged in use. The arrangement also does away entirely with the use of gears or toothed segments of any kind and provides a lock in which friction is reduced to a minimum.- As before stated, the said lock, in addition to its uses in connection with hinged doors as shown, may also be effectively used in comiection with sliding and rolling doors of any description. f

Various changes in the speciiic forms shown and described may be made within the scope of the claims without departing from the spirit of my invention.

I claim:

l. In a lock, the combination of a casing, a bolt pivotally mounted in said casing and permanently extending eXteriorly thereof, an extension projecting transversely from said bolt, pivoted means permanently mounted in said casing` and normally out of engagement with said extension, said mea-ns being arranged to describe a circular path intersecting said extension, means for mov ing said pivoted means into cooperative engagement with said extension to swing said bolt on its pivot, a locking member pivoted in said casing and cooperating devices on said locking member and said extension whereby said bolt is locked in its operative and its inoperative position.

2. In a lock, the combination of a casing, a pivotally mounted bolt, an extension projecting transversely from said bolt, a plurality of levers independently moimted upon opposite walls of said easing, ea'ch lever having a portion normally out of engagement with said extension and arranged to describe a circular path intersecting said extension, a plurality of means operated independently of each other for independently moving said levers into coperative engagement with said extension to swing said bolt on its pivot, and a device whereby said bolt is locked both in its operative and in its inoperative positions. p

8. A lock comprising a casing, a bolt pivotally carried thereby, a slotted extension on said bolt and a plurality of means mounted on said casing in opposed relation to each other and independently operative and cooperating with said slotted extension to swing said bolt on its pivot.

4. A lock comprising a casing, a bolt pivotally carried thereby, a slotted extension, a plurality of levers movably mounted in said casing, pins carried by said levers and means for operating said levers independently of each other to move said pins into said slotted extension whereby said bolt is swung on its pivot.

5. A lock comprising a casing, a bolt pivotally mounted therein and projecting eX- teriorly thereof, a slotted extension on said bolt, a lever rotatably mounted in said casing, a pin carried by said lever, means for actuating said lever whereby said pin is moved into said slotted extension to swing the bolt on its pivot, means for locking said bolt against pivotal movement and coperating devices on said lever and locking means whereby the latter is moved to release said bolt.

6. A lock comprising a casing, a bolt pivotally mounted therein and projecting eX- teriorly thereof, a slotted extension on said bolt, a lever rotatably mounted in said casing, a pin carried by said lever, means for actuating said lever whereby said pin is moved into said slotted extension to swing the bolt on its pivot, a locking lever in said casing, coperating means on said locking lever and bolt whereby the latter is locked in its operative and in its inoperative positions and coperating devices on said rotatable lever and locking lever whereby the latter is moved to disenga-ge said coperating means and release the bolt.

7. Alock comprising a casing, a bolt pivotally inounted therein and projecting eX- teriorly thereof, a slotted extension on said bolt, a first lever rotatably mounted in said casing, a pin carried by said lever and cooperating with said slotted extension to swing the bolt on its pivot, a second lever rotatably mounted in said casing and movable independently on said first lever, a plurality of pins carried by said second lever and coperating with said slotted extension to swing the bolt on its pivot and means for arresting the rotative movements of said levers.

8. A lock comprising a casing, a bolt pivotally mounted therein and projecting eX- teriorly thereof, a slotted extension on said bolt, a locking lever for locking said bolt against pivotal movement, cams carried by said locking lever, a plurality of independently movable levers in said casing, means for actuating said levers, devices on said levers cooperating with said cams to move said locking lever to an inoperative position and pins on said levers cooperating with said slotted extension to swing said bolt on its pivot.

9. A lock comprising a casing, a bolt piv- `otally mounted therein and extending eX- teriorly thereof, a slotted extension on said bolt and provided with spaced notches, a locking lever in said casing, a shoulder carried by said locking lever and cooperating with said notches to lock said bolt respectively in its operative and its inoperative positions, a cam carried by said looking lever, an operating lever, a nose carried by said operating lever and arranged to engage said cam to move said locking lever whereby said shoulder is moved out of said notches to release the bolt, a pin carried by said operating lever and cooperating with said slotted eX- tension to swing the bolt on its pivot, and means for actuating said operating lever.

10. A lock comprising a casing, a bolt pivotally mounted therein andv extending eX- teriorly thereof, a slotted extension on said bolt and provided with spaced notches, a locking lever in said casing, a shoulder carried by said locking lever and cooperating with said notches to lock said bolt respectively in its operative and its inoperative positions, a pair of cams carried by said locking lever, a single lever rotatably mounted in said casing, a device carried by said single lever and arranged to engage one of said cams to move the locking lever to an inoperative position whereby said shoulder is moved out o said notches to release the bolt, a pin carried by said single lever and cooperating with said slotted extension to swing the bolt on its pivot, a double lever rotatably mounted in said casing, a plurality of devices carried by said double lever and arranged to engage the other cam whereby said locking lever is moved to an inoperative position to disengage said shoulder from said notches and release the bolt, a plurality of pins carried by said double lever and cooperating with said slotted extension to swing the bolt on its pivot and a plurality of means for independently actuating said single and double levers.

11. A lock comprising a casing, a bolt pivotally mounted therein and extending exteriorly thereof, a slotted extension on said bolt and provided with spaced notches, a locking lever in said casing, a shoulder carried by said locking lever and cooperating with said notches to lock said bolt respectively in its operative and its inoperative positions, a pair of cams carried by said locking lever, a single lever rotatably mounted in said casing, a device carried by said single lever and arranged to engage one of said cams to move the locking lever to an inoperative position whereby said shoulder is moved ont of said notches to release the bolt, a pin carried by said single lever and cooperating with said slotted extension to swing the bolt on its pivot, a double lever rotatably mounted in said casing, a plurality of devices carried by said double lever and arranged to engage the other cam whereby said locking lever is moved to an inoperative position to disengage said shoulder from said notches and release the bolt, a plurality of pins carried by said double lever and cooperating with said slotted eXtension to swing the bolt on its pivot, a plurality of means tor independently actuating said single and double levers, a stop carried by said locking lever for arresting the rotative movement of said single lever in one direction when the bolt is in its operative position, a stop carried by said bolt tor arresting the rotative movement ot' said single lever in the opposite direction when the bolt is in its inoperative position and a spring cooperating with the pins on the double lever to arrest its rotative movements.

12. A lock comprising a casing, a bolt pivotally carried thereby, locking means for locking said bolt against pivotal movement, rotatable means for releasing said locking means and for swinging said bolt on its pivot, a projection carried by said locking means for arresting the rotative movement of said rotatable means in one direction when said bolt is in its operative position and a projection carried by said bolt for arresting the rotative movement of said rotatable means in the opposite direction when the bolt is in its inoperative position.

13. A lock comprising a casing, a bolt pivotally carried thereby, locking means for locking said bolt against pivotal movement, rotatable means for releasing said locking means and for swinging said bolt on its pivot, and projections carried respectively by said bolt and locking means whereby the rotative movements of said rotatable means are arrested.

14e. The combination of a door casing, a door movably mounted therein, a keeper located upon said casing, a lock carried by said door, a pivoted bolt forming part of said lock and arranged to extend in front of said keeper to resist an inward movement of said door, a member on said bolt arranged to extend transversely beyond said keeper to resist a separation of the free vertical edge of said door from the opposed edge oi the door casing, and a second member carried by said `first member and arranged to extend behind said keeper to resist an outward movement oi said door.

15. In a lock, the combination of a casing, a pivotally mounted bolt provided with a slot, a movable lever, a projection carried by said lever permanently mounted on said llo casing and means for actuating said lever projection on the other of said elements, and to move said projection into seid slot wheremeans for actuating said lever to bring said by said bolt is swung on its pivot. slot and projection into coperative engagel0 1G. In a lock, the combination of a, casing, ment whereby said bolt is swung on its pivot. 5 a pivotelly mounted bolt, a move-ble lever In testimony whereof I have hereunto Set permanently mounted on said casing, one of my hand. said elements being provided with a slot, a JACOB KUHN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, ZD. C. 

